A composite ventilation device for a drainage riser

Abstract

The present invention relates to the technical field of drainage pipelines, and particularly relates to a composite ventilation device for a drainage riser; it includes a pipeline and a composite ventilation module, and the composite ventilation module is connected to the pipeline; the composite ventilation module includes a three-way pipe fitting, a short pipe, an air suction valve, a bent pipe, a butterfly valve unit and a roof vent cap. The three-way pipe fitting is connected to the pipeline, one end of the short pipe is connected to the three-way pipe fitting, an air suction valve is arranged at the other end of the short pipe, one end of the bent pipe is connected to the three-way pipe fitting, a roof vent cap is arranged at the other end of the bent pipe, and a butterfly valve unit is arranged on the bent pipe. By combining the roof vent cap and the air suction valve, the water seal is protected to avoid the backflow of foul air in the toilet.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage pipes, and particularly to a composite ventilation device for a drainage riser. Background Art

[0002] With the large-scale construction of residential buildings, there are more and more high-rise and super high-rise residential buildings, and people's requirements for the quality of the indoor living environment are also increasing day by day. The root causes of many problems affecting the indoor living environment come from the drainage system of residential buildings. For example, the problem of odor return in the bathroom is particularly obvious in high-rise and super high-rise residences. In daily life, the problem of odor return in the bathroom is often encountered. There is a water seal in the floor drain in the bathroom. Under normal conditions, the water seal will isolate the odor in the pipe. However, after the water seal is damaged, the odor will overflow from the floor drain. Since the floor of the residential bathroom does not drain frequently, the water in the water seal is lost or completely damaged and generally cannot be replenished in time. The bathroom space is relatively small and enclosed. When the odor overflows, the impact on the indoor residents' senses is very direct and obvious.

[0003] At present, a roof vent cap is directly installed at the top of the drainage riser. In winter, the outdoor wind speed is high, and the air temperature in the pipe is higher than the outdoor temperature at the top of the pipe. Under the dual action of wind pressure and thermal pressure, the air flow in the drainage riser is intense. The intense air flow leads to an accelerated evaporation of the water in the water seal, ultimately resulting in the loss and damage of the water seal in the drainage pipe system, thereby causing odor return in the bathroom. The air flow in the drainage riser of high-rise residences is more intense than that of multi-story residences, resulting in the easier loss and damage of the water seal in the floor drain, thereby causing odor return in the bathroom. Summary of the Invention

[0004] The purpose of the present invention is to provide a composite ventilation device for a drainage riser, which solves the problem of rapid loss of the water seal in the indoor drainage system, resulting in odor return in the bathroom.

[0005] To achieve the above purpose, a composite ventilation device for a drainage riser adopted by the present invention includes a pipe and a composite ventilation module, and the composite ventilation module is connected to the pipe in communication;

[0006] The composite ventilation module includes a tee fitting, a short pipe, an inhalation valve, an elbow pipe, a butterfly valve unit, and a roof vent cap. The tee fitting is connected to the pipe in communication. One end of the short pipe is connected to the tee fitting in communication, and the other end of the short pipe is provided with the inhalation valve. One end of the elbow pipe is connected to the tee fitting in communication, and the other end of the elbow pipe is provided with the roof vent cap. The butterfly valve unit is provided on the elbow pipe.

[0007] Wherein, the butterfly valve unit includes an electric butterfly valve and a controller. The electric butterfly valve is fixedly connected to the elbow pipe, and the controller is electrically connected to the electric butterfly valve.

[0008] Wherein, the butterfly valve unit further includes a timing switch and a power supply, the timing switch is electrically connected to the controller, and the power supply is electrically connected to the timing switch.

[0009] Wherein, the pipeline includes a drainage outlet pipe and a drainage riser, the drainage riser is communicated with the drainage outlet pipe, and the tee fitting is communicated with the drainage riser.

[0010] Wherein, the pipeline further includes a plurality of drainage branch pipes, and each drainage branch pipe is respectively communicated with the drainage outlet pipe.

[0011] Wherein, the drainage riser composite ventilation device further includes an installation module, and the installation module is respectively connected to the short pipe and the suction valve.

[0012] Wherein, the installation module includes a first mounting seat, a second mounting seat, a connecting rod, a resisting spring and a resisting column. The first mounting seat is fixedly connected to the short pipe and sleeved on the outer side wall of the short pipe. The second mounting seat is fixedly connected to the suction valve and located above the first mounting seat. The first mounting seat has a clamping groove. The connecting rod is fixedly connected to the second mounting seat. The connecting rod has an installation cavity. The resisting spring is arranged in the installation cavity. Two ends of the resisting spring are respectively connected to the connecting rod and the resisting column, and the resisting column is adapted to the clamping groove.

[0013] Wherein, the installation module further includes a sealing gasket and an elastic member. The sealing gasket is fixedly connected to the first mounting seat and located between the first mounting seat and the second mounting seat. The elastic member is arranged in the sealing gasket.

[0014] A compound ventilation device for a drainage riser according to the present invention, wherein the compound ventilation module includes two ventilation components with different ventilation principles, namely the roof ventilation cap and the suction valve. The roof ventilation cap can both intake and exhaust air, while the suction valve can only intake air. The butterfly valve unit is used to selectively choose the ventilation method at the top of the pipeline between the roof ventilation cap and the suction valve as needed. In normal weather, the electric valve on the pipeline is in the normally open state, and the pipeline is ventilated through the roof ventilation cap. Since the roof ventilation cap is unobstructed, no negative pressure is generated in the pipeline, so the suction valve will always be in the closed state and not work. At this time, the top of the pipeline can both intake and exhaust air using the roof ventilation cap. If there is an odor in the pipeline, it can be dissipated into the outdoor air. In winter, when the outdoor wind speed is high and the indoor-outdoor temperature difference is large, the electric valve on the pipeline is closed. When the pipeline drains water, negative pressure is generated in the pipe, and the suction valve opens. The pipeline uses the suction valve for ventilation. In this working condition, the pipeline can only intake air and cannot exhaust air, thereby reducing the air circulation in the pipeline, protecting the water seal on the pipeline, and preventing foul air from flowing back into the bathroom. By combining the roof ventilation cap and the suction valve, the water seal on the pipeline is protected, and foul air is prevented from flowing back into the bathroom. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of the compound ventilation device for a drainage riser of the present invention.

[0017] Figure 2 is a schematic structural diagram of the compound ventilation module of the present invention.

[0018] Figure 3 is a schematic structural diagram of the installation module of the present invention.

[0019] 11 - Drainage outlet pipe, 12 - Drainage riser, 13 - Drainage branch pipe, 20 - Compound ventilation module, 21 - Three-way pipe fitting, 22 - Short pipe, 23 - Suction valve, 24 - Elbow pipe, 25 - Electric butterfly valve, 26 - Controller, 27 - Timing switch, 28 - Power supply, 29 - Roof ventilation cap, 30 - Installation module, 31 - First mounting seat, 32 - Card slot, 33 - Second mounting seat, 34 - Connecting rod, 35 - Installation cavity, 36 - Supporting spring, 37 - Supporting column, 38 - Sealing gasket, 39 - Elastic member. DETAILED DESCRIPTION OF THE INVENTION

[0020] Please refer to Figures 1 to 3 , in which Figure 1 is a schematic structural diagram of a composite ventilation device for a drainage riser,[ Figure 2 is a schematic structural diagram of a composite ventilation module,[ Figure 3 is a schematic structural diagram of an installation module.[

[0021] The present invention provides a composite ventilation device for a drainage riser, which includes a pipe and a composite ventilation module 20, and the composite ventilation module 20 is communicated with the pipe;

[0022] The composite ventilation module 20 includes a tee fitting 21, a short pipe 22, an air inlet valve 23, an elbow pipe 24, a butterfly valve unit and a roof vent 29. The tee fitting 21 is communicated with the pipe. One end of the short pipe 22 is communicated with the tee fitting 21, and the other end of the short pipe 22 is provided with the air inlet valve 23. One end of the elbow pipe 24 is communicated with the tee fitting 21, and the other end of the elbow pipe 24 is provided with the roof vent 29. The butterfly valve unit is arranged on the elbow pipe 24.

[0023] In this embodiment, the composite ventilation module 20 includes two ventilation components with different ventilation principles, namely the roof vent 29 and the air inlet valve 23. The roof vent 29 can both intake and exhaust air, while the air inlet valve 23 can only intake air. The butterfly valve unit is used to select the ventilation method at the top of the pipe between the roof vent 29 and the air inlet valve 23 as required. In normal weather, the electric valve on the pipe is in the normally open state, and the pipe is ventilated through the roof vent 29. Since the roof vent 29 is unobstructed, no negative pressure will be generated in the pipe. Therefore, the air inlet valve 23 will always be in the closed state and not work. At this time, the top of the pipe can both intake and exhaust air through the roof vent 29. If there is an odor in the pipe, it can be dissipated into the outdoor air. In winter, when the outdoor wind speed is high and the indoor-outdoor temperature difference is large, the electric valve on the pipe is closed. When the pipe is draining, negative pressure is generated in the pipe, and the air inlet valve 23 is opened. The pipe uses the air inlet valve 23 for ventilation. In this working condition, the pipe can only intake air and cannot exhaust air, thereby reducing the air circulation in the pipe, protecting the water seal on the pipe, and preventing foul air from flowing back into the bathroom.

[0024] Further, the butterfly valve unit includes an electric butterfly valve 25 and a controller 26. The electric butterfly valve 25 is fixedly connected to the elbow pipe 24, and the controller 26 is electrically connected to the electric butterfly valve 25.

[0025] Further, the butterfly valve unit further includes a timing switch 27 and a power supply 28. The timing switch 27 is electrically connected to the controller 26, and the power supply 28 is electrically connected to the timing switch 27.

[0026] In this embodiment, if the top of the pipe has been ventilated only through the suction valve 23, since the suction valve 23 can only intake air, when there is an odor in the pipe, it cannot be dispersed into the outdoor air. After a long accumulation time, there will be adverse consequences. To solve this problem, the following measures are taken: The electric butterfly valve 25 is set through the timing switch 27, for example, between 13:00 and 14:00 every day. During the period from 13:00 to 14:00, the outdoor temperature is the highest, the temperature difference between the inside of the pipe and the outdoor temperature is the smallest, the influence of the air flow in the pipe under the action of thermal pressure is the smallest, and the damage to the water seal is the smallest, thereby avoiding the return of odors in the bathroom; The electric butterfly valve 25 and the power supply 28 are connected. The electric butterfly valve 25 is opened to make the roof vent 29 work. At this time, the pipe can both intake and exhaust air. If there is odor in the pipe, it can be discharged into the air during this period without long-term accumulation. During the rest of the day, the pipe is converted to the ventilation state of the suction valve 23; In winter, during the non-heating period of local residences, the power supply 28 can be continuously turned off, and the electric butterfly valve 25 is set to the normally open state, and the pipe only uses the roof vent 29; During the local heating season, the power supply 28 is turned on, and through the timing switch 27, referring to the aforementioned time control principle, the operation rules of the composite ventilation module 20 are set to protect the water seal in the drainage system and avoid the problem of the return of odors in the bathroom.

[0027] Further, the pipe includes a drainage outlet pipe 11 and a drainage riser 12. The drainage riser 12 is connected to the drainage outlet pipe 11, and the tee fitting 21 is connected to the drainage riser 12.

[0028] Further, the pipe further includes a plurality of drainage branch pipes 13, and each drainage branch pipe 13 is respectively connected to the drainage outlet pipe 11.

[0029] In this embodiment, the composite ventilation module 20 includes two ventilation components with different ventilation principles, namely the roof vent 29 and the suction valve 23. The roof vent 29 can both intake and exhaust air, while the suction valve 23 can only intake air. The electric butterfly valve 25 is used to select the ventilation method at the top of the drainage riser 12 between the roof vent 29 and the suction valve 23 as required. In normal weather, the electric valve on the drainage branch pipe 13 is in the normally open state, and the drainage riser 12 is ventilated through the roof vent 29. Since the roof vent 29 is unobstructed, no negative pressure is generated in the drainage riser 12. Therefore, the suction valve 23 will always be in the closed state and not work. At this time, the top of the drainage riser 12 can both intake and exhaust air using the roof vent 29. For example, if there is an odor in the drainage outlet pipe 11, it can be dissipated into the outdoor air. In winter, when the outdoor wind speed is high and the indoor-outdoor temperature difference is large, the electric valve on the drainage branch pipe 13 is closed. When the drainage riser 12 is draining, negative pressure is generated inside the pipe, and the suction valve 23 opens. The drainage riser 12 uses the suction valve 23 for ventilation. In this operating condition, the drainage riser 12 can only intake air and cannot exhaust air, thereby reducing the air circulation inside the drainage riser 12, protecting the water seal on the pipe, and preventing foul air from returning to the bathroom. If the top of the drainage riser 12 has been ventilated only through the suction valve 23, since the suction valve 23 can only intake air, when there is an odor in the pipe, it cannot be dissipated into the outdoor air. After a long accumulation time, there will be adverse consequences. To solve this problem, the following measures are taken: The electric butterfly valve 25 is set through the timing switch 27. For example, between 13:00 and 14:00 every day. During the period from 13:00 to 14:00, the outdoor temperature is the highest, the temperature difference between the inside of the pipe and the outdoor temperature is the smallest, the influence of the air circulation inside the drainage riser 12 under the action of thermal pressure is the smallest, and the damage to the water seal is the smallest, thereby preventing foul air from returning to the bathroom. The electric butterfly valve 25 and the power supply 28 are connected, and the electric butterfly valve 25 is opened to make the roof vent 29 work. At this time, the drainage riser 12 can both intake and exhaust air. If there is an odor in the pipe, it can be discharged into the air during this period without long-term accumulation. During the rest of the day, the drainage riser 12 is switched to the ventilation state of the suction valve 23. In winter, during the non-heating period of local residences, the power supply 28 can be continuously turned off, and the electric butterfly valve 25 can be set to the normally open state. The drainage riser 12 only uses the roof vent 29. During the local heating season, the power supply 28 is turned on, and through the timing switch 27, referring to the aforementioned time control principle, the operating rules of the composite ventilation module 20 are set to protect the water seal in the drainage system and prevent foul air from returning to the bathroom.

[0030] Further, the composite ventilation device of the drainage riser further includes an installation module 30, and the installation module 30 is respectively connected to the short pipe 22 and the suction valve 23.

[0031] In this embodiment, the installation module 30 is used to connect the short pipe 22 and the suction valve 23 so as to repair the suction valve 23.

[0032] Further, the installation module 30 includes a first mounting seat 31, a second mounting seat 33, a connecting rod 34, a resisting spring 36 and a resisting column 37. The first mounting seat 31 is fixedly connected to the short pipe 22 and sleeved on the outer side wall of the short pipe 22. The second mounting seat 33 is fixedly connected to the suction valve 23 and is located above the first mounting seat 31. The first mounting seat 31 has a card slot 32. The connecting rod 34 is fixedly connected to the second mounting seat 33. The connecting rod 34 has an installation cavity 35. The resisting spring 36 is arranged in the installation cavity 35. Two ends of the resisting spring 36 are respectively connected to the connecting rod 34 and the resisting column 37, and the resisting column 37 is adapted to the card slot 32.

[0033] In this embodiment, when the resisting column 37 is inserted into the card slot 32, the first mounting seat 31 and the second mounting seat 33 are relatively fixed. At this time, the short pipe 22 and the suction valve 23 are relatively fixed. During the repair process of the suction valve 23, press the resisting column 37 in the card slot 32 so that the resisting column 37 moves from the card slot 32 to the installation cavity 35. At this time, the connecting rod 34 can be detached from the first mounting seat 31 so as to repair the suction valve 23. After the repair is completed, align the connecting rod 34 with the card slot 32 and press the resisting column 37. At this time, the resisting spring 36 is compressed and has a resilience. When the card slot 32 is communicated with the installation cavity 35, under the action of the resisting spring 36, the resisting column 37 pops into the card slot 32 from the installation cavity 35, so that the short pipe 22 and the suction valve 23 are relatively fixed.

[0034] Further, the installation module 30 further includes a sealing gasket 38 and an elastic member 39. The sealing gasket 38 is fixedly connected to the first mounting seat 31 and is located between the first mounting seat 31 and the second mounting seat 33. The elastic member 39 is arranged in the sealing gasket 38.

[0035] In this embodiment, the first mounting seat 31 and the second mounting seat 33 are relatively fixed, and the second mounting seat 33 presses the gasket 38. Under the action of the elastic member 39, the gasket 38 improves the tightness between the first mounting seat 31 and the second mounting seat 33, thereby improving the sealing effect between the short pipe 22 and the suction valve 23.

[0036] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand the entire or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A composite ventilation device for a drainage riser, characterized in that it includes a pipe and a composite ventilation module, and the composite ventilation module is communicated with the pipe; the composite ventilation module includes a tee fitting, a short pipe, an air suction valve, an elbow pipe, a butterfly valve unit and a roof vent. The tee fitting is communicated with the pipe. One end of the short pipe is communicated with the tee fitting, and the air suction valve is arranged at the other end of the short pipe. One end of the elbow pipe is communicated with the tee fitting, and the roof vent is arranged at the other end of the elbow pipe. The butterfly valve unit is arranged on the elbow pipe.

2. The composite ventilation device for a drainage riser according to claim 1, characterized in that the butterfly valve unit includes an electric butterfly valve and a controller. The electric butterfly valve is fixedly connected to the elbow pipe, and the controller is electrically connected to the electric butterfly valve.

3. The composite ventilation device for a drainage riser according to claim 2, characterized in that the butterfly valve unit further includes a timing switch and a power supply. The timing switch is electrically connected to the controller, and the power supply is electrically connected to the timing switch.

4. The composite ventilation device for a drainage riser according to claim 1, characterized in that the pipe includes a drainage outlet pipe and a drainage riser. The drainage riser is communicated with the drainage outlet pipe, and the tee fitting is communicated with the drainage riser.

5. The composite ventilation device for a drainage riser according to claim 4, characterized in that the pipe further includes a plurality of drainage branch pipes, and each drainage branch pipe is respectively communicated with the drainage outlet pipe.

6. The composite ventilation device for a drainage riser according to claim 1, characterized in that the composite ventilation device for a drainage riser further includes an installation module, and the installation module is respectively connected to the short pipe and the air suction valve.

7. The composite ventilation device for a drainage riser according to claim 6, characterized in that the installation module includes a first mounting seat, a second mounting seat, a connecting rod, a resisting spring and a resisting column. The first mounting seat is fixedly connected to the short pipe and sleeved on the outer side wall of the short pipe. The second mounting seat is fixedly connected to the air suction valve and located above the first mounting seat. The first mounting seat has a clamping groove. The connecting rod is fixedly connected to the second mounting seat. The connecting rod has an installation cavity. The resisting spring is arranged in the installation cavity. Two ends of the resisting spring are respectively connected to the connecting rod and the resisting column, and the resisting column is adapted to the clamping groove.

8. The composite ventilation device for a drainage riser according to claim 7, characterized in that the installation module further includes a sealing gasket and an elastic member. The sealing gasket is fixedly connected to the first mounting seat and located between the first mounting seat and the second mounting seat. The elastic member is arranged in the sealing gasket.

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